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III. Fill in the table using information from the text following it.

Device or thing

Main components

Usage

a power source,

lenses

a manipulator,

a drive,

a control unit

for communi cating -

for producing a beam of light

a laser

a car

٧

٧

Number 1 is known as a laser. This device is used for producing a very power­ful beam of light. It has its own power source and several lenses.

Number 2 is known as a telephone. This is an apparatus for communicating. It has a receiver.

Number 3 is known as a car. This vehicle is used for transporting passengers and goods. Every car has four wheels and an engine.

Number 4 is defined as a robot. It is used for performing different jobs instead of human beings. It has a manipulator, a control unit and a drive.

Activity

I. Ask your friend what the following objects are and what they are used for.

EXAMPLE: A: – What's this called, Boris?

B: – I think this is called an ammeter.

A: – And what is it used for?

B: – Oh, it's used for measuring current.

a thermometer

a hammer

a computer

a gauge

a camera

II. Choose one of the objects and describe it to your groupmate. Let him guess what it is.

EXAMPLE:

A: Boris, it's a thing for tightening screws. What's it called?

B: I think it's a screwdriver. Here it is.

A: Yes, you are quite right.

Writing

I. Complete these sentences.

1. This tool … known … a hammer. It's … for … in nails. It … a wooden … and a metal….

2. There are some … in the picture. They … called a … and a … They are … for … metal and wood. They have also wooden … and metal ….

II. Translate the text into Ukrainian.

Any instrument for measuring electricity is known as a meter. An ammeter is used for measuring current in amperes. The abbreviation for the ampere is amp. There are very delicate ammeters that are used for measuring very small current. They are known as a millifmmeter and a microammeter. The device for reading a thousandth of an ampere is called a milliammeter while a microammeter is a device for reading a millionth of an ampere.

Further reading Engine.

I. Learn the following words and word-combinations to comprehend the text.

energy-conversion

pollution

include

alternate

steam

source

rotary

refinement

reciprocating

competitive

diesel engine

emission

gasoline engine

device

reliability

capacity

operate

pressure

efficiency

rate

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